Closely related to A. kingii and A. berlepschi. Formerly treated as a race of A. kingii, but differs in morphology and altitudinal range, and female said to be “notably different” from that of A. kingii; differences claimed in literature, however, are not always constant, and white breast patch of female not always present (and seen on one specimen of A. k. smaragdinus). Further research might result in remerging of present species with others in genus but this seems unlikely, as present form occurs sympatrically with A. kingii in Colombian W Andes (Cauca and Nariño), where it occupies slightly different habitats. Proposed race pseudocoelestis best considered synonymous with nominate, since morphological differences superficial. Two subspecies currently recognized.
Food and feeding
Status and conservation
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